Cabinet construction



April 25, 1961 c. SCHOFIELD CABINET CONSTRUCTION Filed April 12, 1956 IN VEN TOR. 05cm LSCHOFIEL 0 A7 Ta /V15) United States Patent CABINETCONSTRUCTION Cecil Schofield, Lakewood, Ohio, assignor to Republic SteelCorporation, Cleveland, Ohio, a corporation of New Jersey Filed Apr. 12,1956, S91. No. 577,684 15 Claims. Cl. 181-33) This invention relates toa sound-deadened cabinet structure and, more particularly, to a panelstructure having a sound-deadening member structurally attached to saidpanels.

Panels for cabinets and particularly hollow panels for cabinet doors arepreferably constructed so as to diminish and avoid objectionable noisesincluding noises characterized as tinny. In metal doors for cabinetconstructions, such as in kitchen equipment, the sounds that may emanatefrom a pair of panels are considered highly objectionable as indicativeof cheap construction. In addition, the cooperating panels must be in afixed relationship with respect to each other, so as to form a permanentstructure.

One of the objects of this invention is to provide a new and improvedmonoplasmic adhesive,-sound-deadening composition.

It is an object of this invention to provide sound deadened constructionincluding adhesive composition affixed to surfaces of the constructionand holding them fixed with respect to each other and separated.

It is a further object of this invention to provide panels held togetherby an adhesive composition which adheres to the panels, deadens noisesproduced at the attached panels and provides structural reinforcement tothe panel construction.

It is still another object of this invention to provide asound-deadening means in a panel construction which has gas-containingvoids and a well defined body.

It is a still further object of this invention to provide a constructionof two panels fastened together and structurally reinforced by anadhesive composition which adheres to the panels and deadens noises.

Still another object of this invention is to provide means and methodfor attachment together of fixed panels of a panel construction with anadhesive mixture which develops voids during the procedure of attachingthe adhesive to the panels.

A still further object of this invention is the provision of means andmethod of forming voids within an adhesive containing mixture to providea final product having a well defined body and adhesiveness.

Still another object of this invention is to provide anadhesive-containing mixture for use in Securing structural partscontaining gas voids and a surface skin, which retains its tooth afterthe formation of the voids and confines the voids in a cellularstructure to provide an adhesive body with a well defined generalconfiguration.

These and other objects of this invention will become more apparent uponconsideration of the following description, taken together with theaccompanying drawings, in which:

Figure 1 is a perspective view of a structural unit of this inventionwith a panel partly broken away to show adhesive sound-deadening stripsin place;

Fig. 2 is an end view of panels before assembly;

Fig. 3 is an end view of the panels of Fig. 2 assembled;

Fig. 4 is an end view of the assembled panels of Fig. 3 with theadhesive sound-deadening material expanded;

Fig. 5 is an end view of panels before assembly show- ICC ing analternate method of applying the sound-deadener;

Fig. 6 is an end view of the panels of Fig. 5 assembled; and

Fig. 7 is the assembled structure of Fig. 6 with the adhesivesound-deadening material expanded.

In one type of panel construction, it. is desirable to provide asound-deadening means which can be secured within a pair of panels ofthis structure. This sounddeadening material contains an adhesivecomposition which adheres to the panel inner surfaces and retains itscharacteristics over a wide range of temperatures without melting,burning, embrittling or cracking. The adhesive composition must retainits adhesive qualities on oil and grease covered surfaces. It is alsodesirable to provide a sound-deadening material with means which expandthe material to extend a small amount of the adhesive composition acrossa substantial space between adjacent panels and retain its shape.

An adhesive composition of this invention has a blend of reclaimedrubber base adhesive and asphalt base cent in a range of percentages ofnot less than 10% by weight of the rubber base adhesive and not morethan 37% by weight of the rubber base adhesive. The adhesive may containa blowing agent of biuret and urea, which is mixed in the adhesivecomposition and forms a gas upon heating to produce voids in thesound-deadening material. The purpose of the blowing agent, fortning inthe voids, is the extension of the sound-deadening material to givegreater use of any given amount of material. The blowing agentincorporated in the adhesive composition provides a mixture which onbaking swells to provide a mass which retains its general configurationas it enlarges. Thus the sound-deadening material may be formed intostrips or ribbons stuck to the sound deadened structure. The formedsound-deadened material either in the blown or unblown form may beinterposed between and attached to cooperating panels simultaneously,deaden the emergence of the noise from the panel structure and at thesame time secure the panels with relation to each other without othermeans of affixation.

With the adhesive composition of this invention and the blowing agentcomposed of biuret and urea, a structure is formed having a surface skinwhich develops after a few seconds of exposure. to ambient air. The skinremains intact during the swelling action produced by the .gasificationof the blowing agent. The cells or voids formed by the gasification areconfined within the surface skin. Thus, oxidation of the material isprevented during the procedure of heating the sound-deadeningcomposition, and also the general shape of the sound-deadening materialstructure is maintained. The sound-deadening material is generally madeup in the form of ribbons or strips and retains the preformed shapeduring the process of heating, adhering and swelling, so that the finalproduct is a blown up version of the original structurel shape.

in Fig. 1 there is shown a panel construction of this invention made upof a panel 10 and a panel 11 assembled together and held in position byadhesive strips 12 made up of blown sound-deadening composition of thisinvention. The strips 12 are laid parallel between the panels ltl and11, spaced at regular intervals. In Fig. 2 an end view of the panels 10and 11 shows the strips 12 applied to panel 10 before assembly of thepanels and blowing of the composition. The strips 12 are shown adheredto the panel 10. The panel 10 is interposed within the panel 11 uponassembly, as shown in Fig. 3. This interposition and assembly bring thestrips 12 into close approach or actual contiguity with the panel 11.

In Fig. 4 the panel construction is shown with the strips 12 expanded bysubjection to the heat. The strips deadening action of this invention.

.bled panels 10 and 11. secure the panels 10 and 11 together.

sive and deadening qualities set forth above.

12 are spread out laterally to occupy a greater volume and provideadditional contiguity with panel surfaces. The expanded strips 12provide the sound-deadening action, structural reinforcement andconstructional fastening of this invention.

In Figs. 5, 6 and 7 an alternate method of applying the strips ofcomposition is shown resulting in a modified panel construction. In Fig.an end view of the panels .10 and 11 shows strips 13 of thesound-deadening adhesive composition in the modified manner ofapplication to the panels. The strips 13 are adhered to each of thepanels 10 and 11. The strips 13 are positioned on each panel withrespect to a corresponding strip 13 on the .other panel, so as to bediametric thereto. The panel 10 is interposed within the panel 11 uponassembly, as shown in Fig. 6. This interposition and assembly bring thediametric strips 13 into close apposition or actual contiguity. In Fig.7 the strips 13 are shown after expansion by subjection to heat. Thestrips 13 are spread out laterally to occupy a greater volume andprovide additional contiguity. Thus, the six strips coalesce into threestrips of expanded adhesive material which adhere to the cooperatingpanels 10 and 11 and provide thesound- The final expanded strips 13provide structural reinforcement to the assem- The final strips alsoserve to The adhesive, sound-deadening material is a blended compositionof rubber adhesive and asphalt cement ,having an adhesiveness whichmeets high and low temperature requirements, and when positioned instructural faces deadens sound produced at the surface.

The rubber adhesive is made up of reclaimed rubber,

,a resin and a solvent. The asphalt cement is made up of a blendedasphalt, a resin binder, a petroleum solvent and a filler. Thesecombined components when blended into the sound-deadening compositionprovide the adhe- The inclusion of the blowing agent in the adhesivecomposition pro-. vides adhesive mixture, referred to above, which canbe expanded on baking without loss of structural or sounddeadeningcharacteristics. A range of proportions of .rubber adhesive, asphaltcement and blowing agent which 5 have been found suitable in thepractice of this invention is disclosed in the table below, wherein arefound .both a representative range of ingredients and a preferredpercentage of components. The following table shows the components ofthe adhesive mixture in percent- The reclaimed rubber component refersto rubber reclaimed from automobile tires such as carcass or tube stock.

The resin component of the rubber adhesive may be selected from thegroup consisting of Cumar Rosin Glycerol ester of hydrogenated rosinGlycerol ester of a neutral glycol ester of rosin Pentaerythritol esterof rosin Pentaerythritol ester of hydrogenated rosin 4 The solventcomponent of the rubber adhesive may be selected from the groupconsisting of Rubber Solvent No. 8180, an aliphatic petroleumsolventShell Oil Company Toluol Mixture of white gasoline, ethyl alcoholand methyl alcohol N-heptane The asphalt component of the asphalt basecement is an asphalt having the following properties- (ring and ball beselected from the group consisting of- Cumarone Phenol formaldehyderesin Ester Gum H, an organic alcohol ester of rosin-Archer-Daniels-Midland Company Arochem 345, a polymerized estergum-Archer-Daniels- Midland Company together with plasticizers selectedfrom the group consisting of- Santicize E-IS, ethyl phthalyl ethylglycollate-Monsanto Chemical Company Triphenyl phosphate Dioctylphthalate Butyl glycol phthalate Dimethylphthalate Diethyl phthalate Thefiller of the asphalt base cement may be bentonite, silica, asbestos ora similar compound.

The solvent component of the asphalt base cement may be selected fromthe group consisting of- Rubber Solvent No. 8180, an aliphatic petroleumsolventShell Oil Company Hi-Flash Naphtha Xylol Toluol Solvesso 100, aslow drying highly aromatic petroleum solvent-Socony Vacuum Oil CompanyAcetone Ethyl alcohol The range of proportions of the general componentsof the rubber base adhesive and asphalt base cement which have beenfound suitable may be used in making up the adhesive composition. Anexample of preferred proportions of the general components is also setforth in the table. The proportions are in percentage by weight.

TABLE II Rubber Base Adhesive Asphalt Base Cement Range, Preferred,Range, Preferred, percent percent percent percent Reclaim rubber ResinFor the purposes of illustration, the following is a table of therelative proportions by weight of specific ingredients making uppreferred proportions each of the two adhesives and the blowing agent ofthe adhesive composition. The relative proportions of the respectivecomponents of adhesives and the agent are centage by weight.

expressed in per- TABLE III Percent Percent As a specific illustrationof the proportions of ingre- 'dients of the preferred adhesive,sound-deadening composition containing approximately 21% rubber baseadhesive, 75% asphalt base cement and 4% blowing agent, the following isgiven:

TABLE IV Percent Reclaim rubber, carcass stock 9.00 .Asphalt (asspecified) 13.00 =Cumra resin 5.00 Cumarone resin 13.00 Asbestos 38.00Toluene 18.00 iBiuret 2.52 Urea- 1.48

The biuret and urea blowing agent which may be incorporated in thesound-deadening material decomposed to produce tiny pockets or voidsgiving the material sounddeadening qualities equivalent to the materialwithout blowing agent. The adhesive mixture with the blowing agent isheated in contact with the sound-deadening surface to expand and providea member having a total volume several times that of the original stripcontaining the unblown biuret and urea.

The following examples of the employment of an adhesive compositon insound-deadening a panel construction are by way of illustration and notlimitative on the scope of the invention. 7

Example 1 One pound of a mixture of 21% by weight of reclaimed rubberbase adhesive and 75% by weight of asphalt base cement are mixed with 4%by weight of biuret and urea blowing agent. The composition mixture isapplied in six strips, each 6. inch wide, on the inner surface of a doorpanel. The panels are assembled to diametrically position thecomposition strips and to provide a cabinet door 16" x 17" x As indimension. The panel is heated to approximately 350 F. to causeexpansion of the mixture by the blowing agent and to expand each pair ofopposed strips into one structural piece. On cooling, after baking, thepanels become structurally interconnected by the adhesive compositionand are assembled into a cabinet construction.

Example II A mixture of 37% by weight of reclaimed rubber base adhesiveand 63% by weight of asphalt base cement are mixed in a volume of onepint to which'is added 5% by weight of biuret and urea blowing agent.The composition mixture is applied in strips /2. inch wide to the innersurface of door panels for a cabinet door 16" x 17" x The panels areassembled to diametrically position the respective strips ofcomposition. The assembled panels are heated to 350 F. to produceexpansion by the gasification of the blowing agent and cause thediametrical strips to join as well as adhere to the respective panels.On cooling, the panels become fixed with respect to each other and thepanel structure is assembled into a cabinet construction.

Example III A mixture of 22% by weight of reclaimed rubber base adhesiveand 78% by weight of asphalt base cement are mixed in a volume of onepint to which is added 10% by weight of biuret and urea blowing agent.The mixture is applied to the inner surface of a door panel in twostrips /2 wide and in height. The assembly of the strips and the doorpanel are heated to 350 F. to cause decomposition of the biuret and ureablowing agent. The decomposition of the blowing agent causes expansionof the mixture forming a structural sound-deadening element adhered tothe inner surface of the panel. The resultant structure has very goodsound-deadening properties.

Example IV A mixture of 37% by weight of reclaimed rubber base adhesiveand 63% by weight of asphalt base cement are mixed in a volume of onepint to which is added 5% by weight of biuret and urea blowing agent and25% by weight of fine sea sand. The mixture is applied in two strips /2wide and A3" in height on the inside of a door panel. The asesmbly ofthe strips and door panel are heated to 350 F. to cause decomposition ofthe blowing agent and an expansion of the mixture. The resultantstructure has very good sound-deadening properties.

Example V A mixture of 22% by weight of reclaimed rubber adhesive and78% by weight of asphalt base cement are mixed in a volume of one pintto which is added 5% by weight of biuret and urea blowing agent. Themixture is sealed in a can and placed in an oven for a period of a weekand held at an oven temperature of 200 F. The can is cooled and aportion of the adhesive mixture is applied to a door panel section. Theassembly of mixture and the door panel are baked in the oven at 350 F.for 20 minutes. The blowing agent in the adhesive is decomposed to blowup the adhesive mixture. The resultant expansion of the adhesive isapproximately the same as the expansion on heating adhesive mixturewhich has not been preheated to 200 F.

The biuret and urea blowing agent allows the adhesive mixture to bestored at 200 F. There is some blow of the blowing agent at 275 F.;however, effective blowing temperatures are 300 F. and above.

The blowing agent of biuret and urea in intimate mixture in the relativeproportions indicated above is found most satisfactory. Either componentwithout the other would not yield Wholly satisfactory results. Otherblowing agents may be substituted for the preferred composition withmodified results. Substitute compositions having a blowing actioninclude mixtures of ammonium and sodium bicarbonates, nitrates andacetates, and organic compounds which are heat decomposable to formbubbles in a rubber mixture, such as diazo-amino-benzene.

It has been established that the optimum or minimum amount of theadhesive composition for three square feet of a panel construction isapproximately eight ounces. Typical dimensions of a panel constructionare indicated in the figures. A variation in door sizes andsounddeadening characteristics is contemplated in the application ofthis invention. The quantity of adhesive composition, per square area ofpanel construction, varies in accordance with these variations indemand.

The adhesive composition containing the blowing agent of this inventionassumes a shape of a structural member as the result of the skin whichforms during the blowing-up step. The skin which forms within a fewseconds of exposure of the adhesive mixture to atmospheric air -ousingredients and percentages of the ingredients.

'7 remains in contact during the swelling action that takes place onbaking of the mixture and decomposition of the blowing agent. The skinis tenacious and impervious and retains the sticky adhesive propertiesof the adhesive composition. Thus, the adhesive material retains itsshape despite the internal physical reformation that occurs as a resultof the gasification. This expansion, as a result of the gasification,and the retention of a structural shape can be likened to the rising ofbread dough on the baking of a loaf. The material, retaining its generalconfiguration, expands in size to a controlled degree.

The sound-deadening material may be mounted between cooperating panelsin a variety of forms. It has been found that relatively wide strips ofthe composition material provide the best sound-deadening structure.However, other shapes of the sound-deadening material between the panelsprovide a solid quality to the cooperating panels on incorporation in acabinet construction. For good sound-deadening results, the compositionmaterial should be applied to door panels in strips of approximately /2"in width and not more than 3" apart.

The adhesive composition is incorporated in the panel constructionpreferably by application of strips to one of the cooperating panelswith subsequent panel assembly and expansion of the composition bringingthe strips into contact with the other panel. This preferred embodimentof the invention is illustrated in Figs. 1, 2, 3 and 4.

Other forms of the incorporation of the adhesive composition arefeasible and within this invention. One such modification is shown inFigs. 5 6 and 7 with the strips of material applied to each inner faceof the panel in opposing relation and may result in the strips expandingto form a single unified piece. The expansion is established assufficient to cause strips of adhesives diametrically positioned oncooperating panels to come together and join, thus forming a singlemember bridging the space between the panels and causing them to befastened together. The surface skin retains the gas pockets within thepanel spacing sound-deadening material. The resultant product is amulti-cellular member attached to the inner surfaces of two cooperatingpanels with the member serving to assist in holding these panelstogether against relative movement.

'Other forms have also been found possible within the scope of thisinvention. For example, a typical adhesive composition mixture may beincorporated in a panel door construction in the shape of circulardoughnuts having open centers (not shown). The adhesive composition mayalso be made up in the form of patties (not shown), which whenincorporated and baked in a panel construction, provide sound-deadeningproperties. The adhesion of this form of incorporation is fair. Themodified forms of incorporation are formed of adhesive compositionswithin the range of percentages of composition set forth in the abovetables.

The physical properties of the adhesive composition may be varied toaccommodate the variations of the form of the adhesive composition bychanging the vari- The percentage composition of the invention in aparticular embodiment is, therefore, in part determined by the form ofthe composition in the embodiment.

The strips between the cooperating panels deaden the sounds created byand at the panels and thus cause doors and other structural elementscontaining panels to have the gas pockets from gasification arepreferred to strips containing solid material.

As pointed out in connection with the figures, theadhesive compositionmay act to fasten the component panels together without any otherfastening. The adhesive composition formed in the panel constructionthus may serve to eliminate the spot welding, as well as deaden soundsemanating from the panels. It is also conceived that the adhesivecomposition may be modified to provide structural reinforcement to thepanel construction, as indicated above. The structural reinforcement maybe enhanced by the modification of the adhesive composition withoutdiminishing the other properties of this invention. It thus will be seenthat the described embodiments of this invention illustrate the subjectmatter invented. These embodiments, however, may be modified withoutdeparture from the spirit of the invention. A modification of theadhesive composition, its form of incorporation and the panelconstruction, may be made to provide for structural reinforcement of thepanel construction by the adhesive composition forms. The properties ofthe composition may be modified within this invention by the addition ofsuch constituents as tackifiers, anti-oxidants, plasticizers, extendersand other agents commonly incorporated in rubber and asphaltic baseadhesives and not incompatible with the composition of this invention.The overall properties of the sound-deadening material may also bealtered by using different resins, fillers and solvents which willenhance the reinforcing properties of the material without objectionablydetracting from its adhesive and sound-deadening properties.

This invention is especially advantageous in the manufacture of kitchencabinet equipment. The doors of such structural units having a pair ofcooperating panels when opened and closed tend to emit a high pitchedand characteristic tinny sound. This is an objectionable feature as theemission of this type of sound is commonly associated with poorlyconstructed objects. A dull, thudlike sound, emitted by the slamming ofa cabinet door, is popularly associated with better and sturdierconstructed pieces. It is, therefore, desirable to dampen the highpitched, thin, tinny sound and to provide an object with the power ofproducing a deeper sound.

The adhesive characteristics of the composition of this invention arereadily appreciated when it is realized that the composition will adhereto surfaces covered by light oil films. This advantage is two-fold infirst eliminating the need of thorough and complete pro-cleaning of anadhered to surface and second, overcoming inadvertent inclusions of oiland other adherence-hampering conditions on the adhered to surfaces.

The adhesive of this invention has a wide range of performance. Aspointed out above, it maintains its adhesive characteristics attemperatures of over 300 F. for substantial periods of time and attemperatures as low as 10 F. for up to 16 hours or more. The adhesive isflexible and is capable of a elbow bend without fracturing and is freeof water which might cause rusting of metal surfaces to which it isapplied. The advantages of the skin-forming characteristics of thecombination of the adhesive composition with the blowing agent arepointed out above. In addition, this blowing agent produces gaseousammonia and no water vapor.

The structural securing together of cooperating panels by means of theadhesive composition eliminates the spot welding operation in the panelconstruction and is consequently economical. Further advantages of thisinvention include simplicity in assembly and in the provision of amonoplasmic sound-deadening member. Monoplasmic is applied to theadhesive composition in the sense that the substance is composed totallyof one common composition. The inclusion of a blowing agent in thesound-deadening composition provides the economy which allows the use ofthe monoplasmic type of sounddeadening strip. 7

As mentioned above, the various embodiments in this 9 description areset forth by way of illustration of the invention and to explain themode of operation or principle. It will be understood that modificationsmay be made without departure from the spirit of the invention. It willbe understood, therefore, that the invention is limited only by thescope of the appended claims.

What is claimed is:

1. A sound-deadening adhesive composition comprising an asphalt basecement in a proportion of at least 60% by weight and a reclaimed rubberbase adhesive mixed therewith which iscapable of forming a structurallycoherent member, said reclaimed rubber base adhesive constituting from19% to 37% by weight of said composition and consisting of reclaimedrubber in the range of about 35% to 50% by weight, a. resin se ectedfrom the group consisting of cumar, rosin, glycerol esters of rosin andpentaerythritol esters of hydrogenated rosin in the range of about 12%to 35% by weight and a solvent selected from the group consisting ofaliphatic petroleum solvents, toluol, ethyl alcohol, and methyl alcoholin the range of about 30% to 38% by weight.

2. A sound-deadening adhesive composition comprising an asphalt basecement and a reclaimed rubber base adhesive mixed therewith which iscapable of forming a structurally coherent member, said asphalt basecement constituting 63% to 81% by weight of said composition andconsisting of asphalt in the range of about 15% to 20% by weight, aresin selected from the group consisting of cumarone, phenolformaldehyde resin, organic alcohol esters of rosin and polymerizedester gums in the range of about 15% to 20% by weight, a filler in therange of about 40% to 60% by weight and a solvent selected from thegroup consisting of petroleum solvents, acetone and ethyl alcohol in therange of about to 20% by weight.

3. A sound-deadening panel construction, comprising a panel sheetcontiguous with a cavity, a sound-deadening adhesive member adhered tosaid panel sheet and occupying less than the entire volume of saidcavity, said member comprising a rubber base adhesive and an asphaltbase cement in a proportion of at least 60% by Weight, said rubber baseadhesive consisting of a reclaimed rubber in the range of about 35% to50% by weight, a resin in the range of about 12% to 35% by weight and asolvent in the range of about 30% to 38% by'weight.

4. A sound-deadening panel construction, comprising a panel sheetcontiguous with a cavity, a sound-deadening adhesive member adhered tosaid panel sheet and occupying less than the entire volume of saidcavity, said member comprising a rubber base adhesive and an asphaltbase cement in a proportion of at least 60% by weight, and said asphaltbase cement consisting of asphalt in the range of about to by weight, aresin in the range of about 15 to 20% by weight, a filler in the rangeof about 40% to 60% by weight and a solvent in the range of about 10% to20% by weight.

5. A sound-deadening panel structure, as claimed in claim 3, including adecomposed blowing agent in said adhesive member.

6. A sound-deadening panel structure, as claimed in claim 4, including adecomposed blowing agent in said adhesive member.

7. A long, thin monoplasmic adhesive sound-deadening member comprisingan adhesive composition consisting of reclaim rubber in the range of7.35% to 10% by weight, asphalt in the range of 11.25% to 15.00% byweight, cumar resin in the range of 4.20% to 7.35% by weight, cumaroneresin in the range of 11.25% to 15.00% by weight, asbestos in the rangeof 30.00% to 45.00% by weight, a solvent selected from the groupconsisting of aliphatic petroleum solvents, aromatic petroleum solvents,methyl alcohol and ethyl alcohol in the range of 13.80% to 22.98%,biuret in the range of 1.46% to 2.52% and urea in the range of 0.86% to10 1.48% and having a relatively tenacious, impervious, sticky outerskin enclosing said adhesive composition to form said member.

8. A sound-deadening adhesive composition compris ing an asphalt basecement in a proportion of between 63% and 81% by weight and a reclaimedrubber base adhesive in a proportion of between 19% and 37% by weightmixed therewith which is capable of forming a structurally coherentmember, said reclaimed rubber base adhesive consisting of reclaimedrubber in the range of about 35% to 50% by weight, a, resin selectedfrom the group consisting of cumar, rosin, glycerol esters of rosin andpentaerythritol esters of hydrogenated rosin in the range of about 12%to 35% by weight and a solvent selected from the group consisting ofaliphatic petroleum solvents, toluol, ethyl alcohol and methyl alcoholin the range of about 30% to 38% by weight, and said asphalt base cementconsisting of asphalt in a range of about 15% to 20% by weight, a resinselected from the group consisting of cumarone, phenol formaldehyderesin, organic alcohol esters of resin and polymerized ester gums in therange of about 10% to 20% by weight, a filler in the range of about 40%to 60% by weight and a solvent selected from the group consisting ofpetroleum solvents, acetone and ethyl alcohol in the range of about 15%to 20% by weight.

9. The composition of claim 8, including a blowing agent which producesa gaseous reaction product upon heating and being capable of forming astructurally coherent member when the blowing agent is decomposed.

10. A monoplasmic adhesive sound-deadening member comprising an adhesivecomposition in an erect structural shape composed of a reclaimed rubberbase adhesive and an asphalt base cement in a proportion of at least 60%by weight, said rubber base adhesive constituting 19% to 37% by weightof said composition and consisting of reclaimed rubber in the range ofabout 35 to 50% by weight, a resin selected from the group consisting ofcumar, rosin, glycerol esters of rosin and pentaerythritol esters ofhydrogenated rosin in the range of about 12% to 35 by weight and asolvent selected from the group consisting of aliphatic petroleumsolvents, toluol, ethyl alcohol and methyl alcohol in the range of about30% to 38% by weight.

11. A monoplasmic adhesive sound-deadening member comprising an adhesivecomposition in an erect structural shape composed of a reclaimed rubberbase adhesive and an asphalt base cement, said asphalt base cementconstituting 63% to 81% by weight of said composition and consisting ofasphalt in the range of about 15% to 20% by weight, a resin selectedfrom the group consisting of cumarone, phenol formaldehyde resin,organic alcohol esters of rosin and polymerized ester gums in the rangeof about 10% to 20% by weight, a filler in the range of about 40% to 60%by weight and a solvent selected from the group consisting of petroleumsolvents, acetone and ethyl alcohol in the range of about 15 to 20% byweight.

12. A panel construction as defined in claim 3, which comprises a secondpanel sheet parallel with the first and proximate thereto at the otherside of the cavity, each of said sheets being a metal panel, saidadhesive member being internally cellular and being adherently engagedwith both of the panel sheets at the mutually facing surfaces of saidsheets.

13. A panel construction as defined in claim 4, which comprises a secondpanel sheet parallel with the first and proximate thereto at the otherside of the cavity, each of said sheets being a metal panel, saidadhesive member being internally cellular and being adherently engagedwith both of the panel sheets at the mutually facing surfaces of saidsheets.

14. A metal-surfaced, sound-deadened, composite panel construction,comprising a pair of proximately spaced, substantially parallel metalpanels arranged to 11 form a cavity between their opposed inner faces,and at least one sound-deadening adhesive mass engaging the mutuallyfacing metallic surfaces of said panels within the cavity and holdingsaid panels in fixed relation to each other, said mass occupying lessthan all of the volume of said cavity and said cavity having void spaceat other localities between the panels, said mass having its lateraldimensions, both lengthwise and crosswise parallel to the panels, atleast as great as the distance between the panels, and said massconsisting of a monoplasmic, internally cellular body, expandedlaterally in place between the panels, which adherently engages themetal panel surfaces and which consists of a mixture of a rubber baseadhesive and an asphalt base cement with a decomposed blowing agenttherein, said cellular struc- 15 ture of the mass being formed by theblowing agent.

5 with the metal panel surfaces.

References Cited in the file of this patent UNITED STATES PATENTS 102,265,770 Crawford Dec. 9, 1941 2,323,336 Knorr July 6, 1943 2,445,290Gonda July 13, 1948 2,578,001 Cubberley et al Dec. 11, 1951 2,707,707Schwarz May 3, 1955 2,744,042 Pace May 1, 1956 2,768,091 Cubberley Oct.23, 1956

